Real Dictionary

writing desk
countable noun: A writing desk is a piece of furniture with drawers, an area for keeping writing materials, and a surface on which you can rest your paper while writing.

writing desk in American English
noun: a piece of furniture with a surface for writing, with drawers and pigeonholes for writing materials

writing desk in British English
noun: a piece of furniture with a writing surface and drawers and compartments for papers, writing materials, etc